4.06 x 2.72 x 1.73 inches

(2-Pack) 3.6V 900mAh Ni-Cd Exit Sign Emergency Light Battery, Replacement Battery for Exitronix 10010037, Max Power B2-0031 MH468886, Unitech LEDR-1 6200RP, Dantona CUSTOM-318 OSA230, Lowes 253799